How to nag in Sanskrit!
Yes, you are right! We can nag in Sanskrit.
Will give you an example.
A woman gets angry with her husband because he allowed their son to do something and the son made a mess of the house.
So here goes..wife nags husband.
तेन इदं नैव करणीयम्! tena idaM naiva karaNIyam! He was not supposed to do this!
मया पूर्व उक्तं न किल? mayA pUrva uktaM na kila? Didn't I tell you?
किमर्थं मम वचनं त्वं न अनुसृतवान्?kimarthaM mama vacanaM tvaM na anusRtavAn? Why don't you follow what I say?
पस्य! किम् अभवत्!pasya kim abhavat! See what happened!
अहं न गणयामि! ahaM na gaNayAmi! I don't care!
त्वमेव वद! किं किं करणीयम्!tvameva vada! kiM kiM karaNIyam!
It's up to you now to say what should be done!